A Waldorf woman was killed and her husband seriously injured during a double shooting Friday evening near Westlake High School.

The couple was walking their dog on a leash along a path connecting the school's baseball field and the Hampshire neighborhood around 6:45 p.m. when they passed a man who, for unknown reasons, pulled out a gun and shot them both multiple times, Charles County Sheriff's Office spokeswoman Diane Richardson said.

Sheriff's officers working security at the Westlake-Great Mills football game heard the gunshots and were on the scene within a minute, Richardson said.

The woman, 40, was taken via ambulance to Civista Medical Center in La Plata, where she died from her injuries, Richardson said. Her husband, 43, was flown to a nearby hospital and admitted with serious injuries.

Police have not released the woman's name, pending notification of next-of-kin.

Officers canvassed the Hampshire neighborhood for possible witnesses and remained there overnight, Richardson said. They resumed looking for evidence along the path Saturday morning, she added.

The sheriff's office made reverse 911 calls alerting nearby residents of the shooting and plans to issue fliers with information on a reward for information soon, Richardson said.

Investigators have not identified a motive for the shooting but do have a “vague” description of the suspect, Richardson said — a black male with a light complexion, possibly in his teens or early 20s.

Charles County Sheriff Rex Coffey (D) has authorized an increase in the reward for information from $1,000 to $5,000, and “our focus now is trying to run down leads,” Richardson said.

“We absolutely need to hear from anybody who has any information,” she added. “If they have an idea as to who may have done it, any information, we will follow up on it.”

Anyone with information should call the sheriff's office at 301-932-2222. Those wishing to remain anonymous may call Crime Solvers at 1-866-411-TIPS, text CHARLES + your tip to CRIMES or visit www.ccso.us to submit a tip online.